add overflow: hidden; to the #outerWrapper #contentWrapper #content
#outerWrapper #contentWrapper #content {
margin: 0 220px 0 0; /* Sets the margin properties for an element using shorthand notation (top, right, bottom, left) */
padding: 10px 10px 10px 10px;
background: url(../../assets/contebbgdrpsh.gif) no-repeat 2px 2px;
background-color: #333;
overflow: hidden;
}